he was only ten he could run faster than any kid in school .A. Though B. ButC. So

问题补充：

he was only ten , he could run faster than any kid in school .

A. Though B. ButC. So

答案：

解析：句意:虽然他只有10岁，但是他比学校里任何一个孩子跑得都快。though 连词，虽然，尽管；but 但是，表示转折；so 因此，所以，表示因果关系。根据句意可知选A。